US4393200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
18 α-Glycyrrhizinic acid and salt thereof
Assignee: Maruzen Kasei Co Ltd
•
Filing: 1981-01-06
•
Granted: 1983-07-12
•
Expires: 2001-01-06
Abstract
Abstract This invention relates to 18 α-glycyrrhizinic acid having the structural formula, ##STR1## and salts thereof as well as a method for the production thereof.
Inventors
- 👤 Akira Miyashita
- 👤 Kenzo Okada
- 👤 Takashi Kuramoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/24; C07H15/256
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
18 α-glycyrrhizinic acid having the structural formula, ##STR6## and salts thereof.
Claim 2
Dependent Claim
11 words
18 α-glycyrrhizinic acid having the structural formula, ##STR6## and salts thereof.
Claim 3
Dependent Claim
17 words
18 α-glycyrrhizinic acid salt according to claim 1 wherein the salt is ammonium, potassium or sodium salt.
Claim 4
Dependent Claim
59 words
A glycyrrhizin composition comprising 30 to 98 mole % of 18 α-glycyrrhizinic acid or its salt and 70 to 2 mole % of 18 β-glycyrrhizinic acid having the structural formula, ##STR7## or its salt, wherein the 2.0 wt % aqueous solution of said composition at 20° C. and pH of 5.0 has a viscosity not higher than 3 centipoises.
Claim 5
Dependent Claim
59 words
A glycyrrhizin composition comprising 30 to 98 mole % of 18 α-glycyrrhizinic acid or its salt and 70 to 2 mole % of 18 β-glycyrrhizinic acid having the structural formula, ##STR7## or its salt, wherein the 2.0 wt % aqueous solution of said composition at 20° C. and pH of 5.0 has a viscosity not higher than 3 centipoises.
Claim 6
Dependent Claim
24 words
The glycyrrhizin composition according to claim 3 wherein 18 α-glycyrrhizinic acid salt and 18 β-glycyrrhizinic acid salt respectively are ammonium, potassium or sodium salt.
References Cited (Backward Citations)
US3046195A
Cited
US3066072A
Cited
US3110711A
Cited
US3240775A
Cited
US3164581A
Cited
US3442911A
Cited
US3450691A
Cited
US3629231A
Cited
US3812097A
Cited
US4107425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |